Scientific calculator CASIO FX-991CW Pocket — 12-digit dot-matrix display, battery-powered, LR44, pocket cover, black

Casio FX-991CW Pocket is a compact 12-digit scientific calculator designed for classroom and self-study use. It combines a clear high-definition 4-gradation display, intuitive cursor operation, and a textbook-style input/output to help students perform a range of mathematical tasks. The pocket-sized black model includes a protective cover and offers fast calculation speed, multiple calculator apps, a spreadsheet, and online visualization via QR codes.

Advantages

The FX-991CW features a high-definition 4-gradation display that highlights the current input position, an intuitive cursor-based interface and an approachable key layout for natural workflow. It delivers high-speed calculations suitable for classroom pace and examinations, includes a Spreadsheet (up to 5 columns × 45 rows), and supports QR-code graph visualization on smartphones or tablets. Dedicated apps and functions—such as Math Box (Dice Roll, Coin Toss), Statistics, Table generation, Equation solving, and memory for functions and variables—support a variety of learning activities.

Suitable for

• Secondary school and university students studying algebra, calculus, statistics, and physics
• Classroom demonstrations and timed examinations where a reliable scientific calculator is required
• Self-study use that benefits from spreadsheet, table generation, and probabilistic simulations

Key specifications

• Model: Casio FX-991CW Pocket (black)
• Display: High-definition 4-gradation display
• Digits: 12-digit display
• Spreadsheet capacity: up to 5 columns × 45 rows (maximum 170 data items)
• Functions: General Calculate, Statistics, Table, Equation solver, Math Box (Dice Roll, Coin Toss), function memory f(x)/g(x), variable storage
• Connectivity: QR-code generation for online graph visualization
• Power: battery powered

How to use

Turn on the calculator and select the appropriate calculator app from the Home screen for the task (Calculate, Statistics, Table, Equation, Math Box, or Spreadsheet). Enter expressions using the cursor to edit inputs and use the function and variable memories to store frequently used expressions or values. Use the Spreadsheet app to input data into columns and rows for statistical calculations or to evaluate recursive formulas. For graphing visualization, generate a QR code from an input equation and scan it with a smartphone or tablet to view graphs online.

Usage recommendations

For exam use, confirm permitted calculator models with your institution. Use the function and variable memories to speed repeated calculations, and employ the Spreadsheet and Table features to organize data for statistics and recursive problems. When sharing results, use the QR-code visualization to present graphs on external devices.